Wsrtjtyk

I met a issue in mysql table partition usage.
table create

CREATE TABLE `talk_record_gz` (

  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

  `eid` int(10) unsigned NOT NULL DEFAULT '0',

  `cc_number` varchar(128) NOT NULL DEFAULT '',

  `gz_res_token` varchar(512) NOT NULL DEFAULT '',

  `gz_file_name` varchar(512) NOT NULL DEFAULT '',

  `gz_status` tinyint(2) NOT NULL DEFAULT '1' COMMENT '1=wait,2=uploading,3=success',

  PRIMARY KEY (`id`),

  KEY `idx_eid` (`eid`),

  KEY `idx_ccnumber` (`cc_number`),

  KEY `idx_token` (`gz_res_token`(255))

) ENGINE=InnoDB AUTO_INCREMENT=504238 DEFAULT CHARSET=utf8

/*!50100 PARTITION BY HASH (id)

PARTITIONS 10 */ 

problem:

execute sql below will get no data(YES, we should filter id as the table is split into partitions by hash[id], but for full search, the data should be find anyhow)

select * from talk_record_gz where cc_number='api00400013602154166222649626fD3conf_1541662225484' and eid=79362;

but if we remove filter eid=79632 as below

select * from talk_record_gz where cc_number='api00400013602154166222649626fD3conf_1541662225484';

we will get data as below

the eid(int) shown in picture above is exactly same as we add in first sql.

I assumed that issue is caused by "charater set", but not sure due to eid is type of int.

PAT:only special line will be missed by first sql,most of lines in this table can be searched by filter eid+cc_number.

any suggestion is appreciate.